Tutorial - Setup Horde with Qt5 & QtQuick 2.1

Before you start, if you don't know what QtQuick is, you should read the QtQuick Documentation: http://qt-project.org/doc/qt-5.1/qtquick/qtquick-index.html (Substitute correct version of your Qt distribution). Horde3D library should be already installed for build scripts to succeed. QtHorde3D.h #ifndef QTHORDE3D_H #define QTHORDE3D_H #include <QQuickItem> #include <QOpenGLFramebufferObject> #include <Horde3D.h> class QtHorde3D: public QQuickItem { Q_OBJECT private: int m_timerID; QOpenGLFramebufferObject* m_fbo; H3DNode m_cam; public: QtHorde3D(QQuickItem* parent = 0); ~QtHorde3D(); protected: QSGNode* updatePaintNode(QSGNode* old, UpdatePaintNodeData* data); void timerEvent(QTimerEvent* evt); private slots: void cleanup(); }; #endif // QTHORDE3D_H QtHorde3D.cpp #include "QtHorde3D.h" #include <QQuickWindow> #include <QOpenGLContext> #include <QSGSimpleTextureNode> #include <Horde3DUtils.h> QtHorde3D::QtHorde3D(QQuickItem* parent) : QQuickItem(parent), m_timerID(0), m_fbo(0), m_cam(0) { this->setFlag(QQuickItem::ItemHasContents); } QtHorde3D::~QtHorde3D() { this->cleanup(); } void QtHorde3D::timerEvent(QTimerEvent* evt) { if (evt && evt->timerId() == m_timerID) this->update(); } QSGNode* QtHorde3D::updatePaintNode(QSGNode* node, UpdatePaintNodeData* data) { QSGSimpleTextureNode* textureNode = static_cast<QSGSimpleTextureNode*>(node); if (!textureNode) textureNode = new QSGSimpleTextureNode(); // Push Qt state. glPushClientAttrib(GL_CLIENT_ALL_ATTRIB_BITS); glPushAttrib(GL_ALL_ATTRIB_BITS); glMatrixMode(GL_TEXTURE); glPushMatrix(); glLoadIdentity(); glMatrixMode(GL_PROJECTION); glPushMatrix(); glMatrixMode(GL_MODELVIEW); glPushMatrix(); glShadeModel(GL_FLAT); glDisable(GL_CULL_FACE); glDisable(GL_LIGHTING); glDisable(GL_STENCIL_TEST); glDisable(GL_DEPTH_TEST); glEnable(GL_BLEND); glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA); // Render Horde3D. int x = this->x(); int y = this->y(); int width = this->width(); int height = this->height(); delete m_fbo; m_fbo = 0; if (width && height) { m_fbo = new QOpenGLFramebufferObject(width, height); textureNode->setTexture(this->window()->createTextureFromId(m_fbo->texture(), m_fbo->size())); } else { textureNode->setTexture(this->window()->createTextureFromId(0, QSize(0,0))); } textureNode->setRect(this->boundingRect()); // Flip Y-axis between Horde3D and GLSL. QMatrix4x4 flipY; flipY.translate(width*0.5, height*0.5); flipY.scale(1.0, -1.0); flipY.translate(-width*0.5, -height*0.5); data->transformNode->setMatrix(flipY); if (m_fbo) { m_fbo->bind(); if (!m_cam) { // Initialize engine. h3dInit(); h3dSetOption(H3DOptions::LoadTextures, 1); h3dSetOption(H3DOptions::TexCompression, 0); h3dSetOption(H3DOptions::FastAnimation, 0); h3dSetOption(H3DOptions::MaxAnisotropy, 4); h3dSetOption(H3DOptions::ShadowMapSize, 2048); // Add resources. H3DRes pipelineRes = h3dAddResource(H3DResTypes::Pipeline, "pipelines/forward.pipeline.xml", 0); H3DRes envRes = h3dAddResource(H3DResTypes::SceneGraph, "models/platform/platform.scene.xml", 0); H3DRes modelRes = h3dAddResource(H3DResTypes::SceneGraph, "models/knight/knight.scene.xml", 0); // Load added resources. h3dutLoadResourcesFromDisk("Content"); // Add an environment. H3DNode env = h3dAddNodes(H3DRootNode, envRes); h3dSetNodeTransform(env, 0, 0, 0, 0, 0, 0, 20, 20, 20 ); // Add a model. H3DNode model = h3dAddNodes(H3DRootNode, modelRes); h3dSetNodeTransform(model, 0, 0, 0, 0, 180, 0, 1, 1, 1 ); // Add a light source. H3DNode light = h3dAddLightNode( H3DRootNode, "Light1", 0, "LIGHTING", "SHADOWMAP" ); h3dSetNodeTransform( light, 0, 15, 40, 0, 0, 0, 100, 100, 100 ); h3dSetNodeParamF( light, H3DLight::RadiusF, 0, 1000 ); h3dSetNodeParamF( light, H3DLight::FovF, 0, 90 ); h3dSetNodeParamI( light, H3DLight::ShadowMapCountI, 1 ); h3dSetNodeParamF( light, H3DLight::ShadowMapBiasF, 0, 0.01f ); h3dSetNodeParamF( light, H3DLight::ColorF3, 0, 1.0f ); h3dSetNodeParamF( light, H3DLight::ColorF3, 1, 0.8f ); h3dSetNodeParamF( light, H3DLight::ColorF3, 2, 0.7f ); h3dSetNodeParamF( light, H3DLight::ColorMultiplierF, 0, 1.0f ); // Add a camera. m_cam = h3dAddCameraNode(H3DRootNode, "Camera", pipelineRes); h3dSetNodeTransform(m_cam, 0, 30, 100, 0, 0, 0, 1, 1, 1 ); QObject::connect(QOpenGLContext::currentContext(), SIGNAL(aboutToBeDestroyed()), this, SLOT(cleanup()), Qt::DirectConnection); } // Setup viewport and render target sizes. h3dSetNodeParamI(m_cam, H3DCamera::ViewportXI, 0); h3dSetNodeParamI(m_cam, H3DCamera::ViewportYI, 0); h3dSetNodeParamI(m_cam, H3DCamera::ViewportWidthI, width); h3dSetNodeParamI(m_cam, H3DCamera::ViewportHeightI, height); h3dSetupCameraView(m_cam, 45.0f, (float)width / height, 0.1f, 1000.0f); h3dResizePipelineBuffers(h3dGetNodeParamI(m_cam, H3DCamera::PipeResI), width, height); // Render scene. h3dRender(m_cam); // Finish rendering of frame. h3dFinalizeFrame(); m_fbo->release(); // Restore (pop) Qt state. glMatrixMode(GL_TEXTURE); glPopMatrix(); glMatrixMode(GL_PROJECTION); glPopMatrix(); glMatrixMode(GL_MODELVIEW); glPopMatrix(); glPopAttrib(); glPopClientAttrib(); } if (!m_timerID) m_timerID = this->startTimer(16); return textureNode; } void QtHorde3D::cleanup() { this->killTimer(m_timerID); m_timerID = 0; if (m_cam) { h3dRelease(); m_cam = 0; delete m_fbo; m_fbo = 0; } } main.qml import QtQuick 2.1 import Horde3D 1.0 Item { id: main Horde3D { id: centralArea anchors.fill: parent } Rectangle { color: Qt.rgba(1, 1, 1, 0.7) radius: 10 border.width: 1 border.color: "white" anchors.fill: label anchors.margins: -10 } Text { id: label color: "black" wrapMode: Text.WordWrap text: "The background here is a scene rendered with Horde3D. This text label and its border is rendered using QML" anchors.right: parent.right anchors.left: parent.left anchors.bottom: parent.bottom anchors.margins: 20 } } main.cpp #include "QtHorde3D.h" #include <QQuickView> #include <QGuiApplication> int main(int argc, char** argv) { QGuiApplication app(argc, argv); qmlRegisterType<QtHorde3D>("Horde3D", 1, 0, "Horde3D"); QQuickView win; win.setSource(QUrl("main.qml")); win.setResizeMode(QQuickView::SizeRootObjectToView); win.show(); return app.exec(); } QMake project file: h3d_qt5.pro TEMPLATE = app TARGET = h3d_qt5 DEPENDPATH += . INCLUDEPATH += . LIBS += -lHorde3D -lHorde3DUtils QT += qml quick # Input HEADERS += QtHorde3D.h SOURCES += QtHorde3D.cpp main.cpp Note: Linkage order for your application CMake project file: CMakeLists.txt CMAKE_MINIMUM_REQUIRED(VERSION 2.8.9) PROJECT(h3d_qt5) FIND_PACKAGE(Qt5Quick) SET(CMAKE_AUTOMOC ON) SET(h3d_qt5_SOURCES QtHorde3D.cpp main.cpp) ADD_EXECUTABLE(Qt5Horde3D ${h3d_qt5_SOURCES}) QT5_USE_MODULES(Qt5Horde3D Qml Quick) TARGET_LINK_LIBRARIES(Qt5Horde3D Horde3D Horde3DUtils) The result should look like this

Horde With Qt5 & QtQuick 2.1 This tutorial introduces the use of Horde3D with Qt5 & QtQuick 2.1 Version: 1.0 Compatible with Horde3D: 1.0 beta 5 Release date: 2013-09-06 Author(s): Zuck